<template>
  <div>
    <ul>
      <li v-for="item in list" :key="item">{{ item }}</li>
    </ul>
    <button @click="cli">走</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      list: [111, 222, 333],
    };
  },
  methods: {
    cli() {
      this.list.push(this.list[0]);
      this.list.splice(0, 1);
    },
  },
};
</script>

<style>
</style>